44 TERTIARY COLEOPTERA OF NORTH AMERICA. 



CERCYON Leach. 



A cosmopolitan genus, very rich in species, mostly occurring in the 

 north temperate regions and abundant in the United States. Only a couple 

 of fossil species are known, an undetermined species from the Pleistocene 

 of I'avaria, and a species from the older Tertiaries of British Columbia. 



CERCYON ? TERRIGENA. 



Cercyon? terrigena Scudd.. Kept. Prog-. Geol. Surv. Can.. ls77-7s. 17i>B (is7l); 

 Tert. Ins. X. A.. 510-511. pi. -1. tig. L'l (IS'.tO); C'ontr. C'ana.l. Pahcont.. II. 45 

 (1892). 



Nicola River, British Columbia. 



Fossil Silphida? are uncommon. Sixteen species in all are known, 

 belonging' to eight genera, Silpha alone being represented by more than one 

 species. All of these species except four of Silpha. are found in the older 

 Tertiaries. Only two genera with a single species each have occurred in 

 America, and of these one, Silpha, occurs also in the Old World Tertiaries. 

 Of the Old Work! genera four are recognized in amber only, and of the 

 three from the rocks one is regarded as extinct. 



SILPHA Linnc. 



We have in the United States about ten species of this genus, which is 

 mainly north temperate and rich in species. Two recent species have been 

 recognized in the Pleistocene of Bavaria and England, and two extinct 

 species in (Jalicia. In the older Tertiaries five species occur, one each in 

 the deposits of Spitzbergen, Radoboj, Oeningen. the b'hine, and ( 'olorado. 



SlLl'HA COLORATA sp. nov. 



PI. Y. Hu-. 5. 



The only specimen known is broken just behind the base of the elvtra 

 and all the portion in iroiit of it lost. What remains, however, is so charac- 

 teristic that there can be little doubt that it belongs in this familv and prob- 

 ably to Silpha. It has the aspect, however, of a Necrophorus from the .spots 



